To make sure your progress is safe and remains accessible on multiple compatible devices, we recommend you link your game to a Google Play, Apple, or Facebook account. This will effectively store your data in our servers, making it accessible in the case of a reinstall, device change, technical issue, etc. and putting you less at risk of losing your progress. You would simply have to reconnect to your account to access it again.
To link your account, you must simply open your in-game mailbox and switch to the "Settings" tab. On the right of this window, you will see the buttons to link your account to Google/Apple and Facebook.
Note: Please note that in an effort to protect them, these linking options may not be available for younger players. Additionally, we highly advise against playing on multiple accounts on the same device as this can lead to issues such as corrupted data.